2 to 3 weeks

Sensor type KTR 021

Sensitive element type all types

Temperature difference

-50 ° C to 200 ° C

Protection class IP 67 according to EN 60529

Case diameter 6 ± 0,1mm

Case length L 20 to 350 mm

Wire / OK

M 10 x 1, M12 x 1,5, M20 x 1,5, G ½ “and others according to customer / OK according to thread

Housing material according to DIN 43650

Response time τ0,5 <9 s (in running water at 0,4 ms-1)

Insulation resistance> 200 MOhm at 500 VDC, 25 ° C ± 3 ° C, humidity <80%


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The KTR 021 resistance temperature sensor is designed for measuring the temperature of gaseous or liquid substances. In the segment of railway vehicle applications, it is used e.g. for specific temperature measurement needs on engines, both compression ignition engines and electric motors, and on gearboxes or machinery and equipment, for which operating vibrations are typical.

The temperature range is -50 ° C to 150 ° C and these limits should not be exceeded even for a short time. The sensor can be used for all control systems compatible with the types of detection elements listed in the technical parameters table. The sensor conforms to the degree of protection IP 67 according to standard EN 60 529, as amended.

The sensor is designed to operate in a chemically non-aggressive environment.


Type tests are carried out by a notified body according to standard EN 50155, as amended, Railway applications - Electronic equipment used on rolling stock, Art. 12.2.9, 12.2.11

- Insulation test according to EN 50155, as amended

- Shock and vibration tests according to EN 61373, as amended

The product meets the parameters in accordance with EN 45545-2, as amended, Fire protection of railway vehicles - Part 2: Requirements for the fire behavior of materials and components. The materials also meet the requirements of the NFPA 130 fire safety standard, as amended.

 variable rod design - length L

- Class-leading precision (except for Ni 10000/5000, Ni 10000/6180, T1 = Ni 2226, NTC 20 kΩ)

- possibility of coating non-standard temperature sensors (DALLAS, TSiC, KTY, SMT, TC etc.)

- possibility of enclosing two sensors

- possibility of 3-wire or 4-wire connection

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